How To Fix BCOM_R020 - No connection to server '&1'

SAP Error Message - Details

• Message type: E = Error

• Message class: BCOM_R - Business Communication: Messages for Rule-Based Routing

• Message number: 020

• Message text: No connection to server '&1'

What causes this issue?

No RFC connection could be established for server '&V1&'

System Response

The system issues an error message and will not allow you to continue with this transaction until the error is resolved.

How to fix this error?

Check the settings for the RFC connection and check that the server has
been installed and configured correctly.

Procedure for System Administrators

Error message extract from SAP system. Copyright SAP SE.

Smart SAP Assistant

• What is the cause and solution for SAP error message BCOM_R020 - No connection to server '&1' ?

  The SAP error message BCOM_R020 No connection to server '&1' typically indicates that the SAP system is unable to establish a connection to the specified server. This can occur for various reasons, and understanding the cause is essential for troubleshooting and resolving the issue.
  Possible Causes:
  
  Network Issues: There may be network connectivity problems between the SAP application server and the target server.
  Server Down: The target server may be down or not responding.
  Incorrect Configuration: The connection parameters (like hostname, port, etc.) may be incorrectly configured in the SAP system.
  Firewall Restrictions: Firewalls or security settings may be blocking the connection to the server.
  SAP Gateway Issues: The SAP Gateway may not be functioning correctly, preventing connections to external servers.
  Timeout Settings: Connection timeout settings may be too low, causing the connection attempt to fail before it can be established.
  
  Solutions:
  
  
  Check Network Connectivity:
  
  Use tools like ping or traceroute to verify that the SAP system can reach the target server.
  Ensure that there are no network outages or disruptions.
  
  
  
  Verify Server Status:
  
  Check if the target server is up and running. If it is down, you may need to restart it or contact the server administrator.
  
  
  
  Review Connection Configuration:
  
  Go to the SAP transaction code SM59 (RFC Destinations) and check the configuration of the RFC destination that corresponds to the server in question.
  Ensure that the hostname, port, and other parameters are correctly set.
  
  
  
  Check Firewall Settings:
  
  Ensure that any firewalls between the SAP system and the target server allow traffic on the required ports.
  
  
  
  Examine SAP Gateway:
  
  Check the status of the SAP Gateway using transaction SMGW. Look for any errors or issues that might be affecting connectivity.
  
  
  
  Adjust Timeout Settings:
  
  If applicable, consider increasing the timeout settings for the connection in the RFC destination configuration.
  
  
  
  Review Logs:
  
  Check the SAP system logs (transaction SM21) and the application logs for any additional error messages that might provide more context.
  
  
  
  Test Connection:
  
  Use the "Test Connection" feature in transaction SM59 to verify if the connection can be established successfully.
  
  
  
  Related Information:
  
  SAP Notes: Check SAP Notes for any known issues or patches related to the error message.
  Documentation: Refer to SAP documentation for detailed information on configuring RFC connections and troubleshooting connectivity issues.
  Support: If the issue persists after trying the above solutions, consider reaching out to SAP support for further assistance.
  
  By systematically checking these areas, you should be able to identify and resolve the cause of the BCOM_R020 error message.